What is cryptocurrency?
Cryptocurrency is digital money recorded on a blockchain — a shared ledger maintained by many computers rather than a single bank or company. Bitcoin was the first; thousands of others now exist.
The core idea
A cryptocurrency is a digital asset whose ownership and transfers are recorded on a public, shared ledger. No central institution issues or controls most cryptocurrencies; the network of participants maintains the record together.
Why people use it
- Transfers can move between parties directly, without a bank in the middle.
- The ledger is open, so anyone can verify transactions.
- Some assets aim to hold steady value (stablecoins); others are volatile.
What it is not
A cryptocurrency is not a share in a company, a bank deposit, or a guaranteed store of value. Its price can rise or fall sharply, and holding it carries its own responsibilities.
Cryptocurrency is the umbrella term you'll meet everywhere. Getting it straight makes wallets, exchanges, and payments far easier to understand.
Think of it as cash that lives on a public ledger instead of in your pocket: you can hand it to someone directly, and everyone can confirm the handoff happened, but no bank sits between you.
- Prices can be highly volatile.
- Self-custody means you alone are responsible for your keys.
- The label 'crypto' covers everything from established networks to outright scams — the category says nothing about quality.
Explore the ecosystem map
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Last reviewed 2026-06-25. This topic can change over time; always confirm current specifics from primary sources.